package itdfq.dfq.Behavior_Patters.Iterator;

/**
 * @Author GocChin
 * @Date 2021/5/15 13:40
 * @Blog: itdfq.com
 * @QQ: 909256107
 * @Descript:
 */
public interface MusicIterator {
    void setmusic(int  i);
    void next();
    void previous();
    boolean isLast();
    Object currentmusic();
    boolean isFirst();
}
